Non-conducting wall.



No. 755,137. I PATENTED MAR. 22,1904.-

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NON-CONDUCTING WALL. APPLIOATION FILED JAN. 18, 1904.

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UNITED STATES Patented. March 22, 1904.

PATENT OFFIC HORACE H. J UDSON, OF STRATFORD, CONNECTICUT, ASSIGNOR TOTHE NONTARIEL CORK MANUFACTURING COMPANY, OF NEW YORK, N. Y.,

A CORPORATION.

NON-CONDUCTING WALL.

SPECIFICATION forming part of Letters Patent No. 755,137, dated March22, 1904. 7

Application filed January 18, 1904. Serial No. 189,4=39. (No model.)

To all whom it may concern:

Be it known that I, HORACE H. JUDsoN, a citizen of the United States,residing at Stratford, county of Fairfield, State of Connecticut, haveinvented a new and useful Non-Conducting Wall, of which the following isa specifi-' cation.

My invention has for its object to produce a non-conducting wall adaptedfor use in the construction of cold-storage warehouses and refrigeratingvaults, apartments, &c., as in breweries, hotels, steamships, &c., whichshall be equal in non-conducting qualities to the best walls heretoforeproduced, shall be thoroughly durable, proof against dampness, easy toconstruct, and relatively inexpensive to build, a saving ofapproximately one-half in the cost of construction being made throughdispensing with furring-strips and nails and reduction in the amount oftime required to construct the wall.

In order to accomplish the desired results, I have devised the novelnon-conducting wall and method of making the same, of which thefollowing description, in connection with the accompanying drawings, isa specification, reference characters being used to indicate the severalparts.

Figure 1 is a horizontal section of a piece of my novel non-conductingwall, and Flg. 2

. is a detail perspective illustrating the method of preparing thestrips of cork for attachment.

The method of making my novel wall is as follows: The foundation isbrickwork, which I have indicated by 10, and the outer layer is cork,which I have indicated by 11. For this purpose I preferably use the wellknown nonpareil cork, which is ordinarily furnished in strips thirtysixinches long by twelve inches wide and two or three inches in thickness,although the size or thickness of the strips has nothing to do with theprinciple of the invention. After the cork strips are in place they maybe painted or finished in any ordinary or preferred manner. Heretoforein place has been to attach furring-strips to the nailing of the stripsof cork thereto has taken so much time and added so much to the cost ofconstruction as to constitute an important factor in contracting. Itshould, furthermore, be noted as an important feature of my novel wallthat the use of nails is wholly avoided, their use having been foundobjectionable, as moisture will follow them through the cork.

m In carrying out my novel method the strips of cork are held in placeby the suction of fresh cement and the formation of dead-air spacesbetween the cork and the brickwork. The face of the brickwork is coveredover with a layer of fresh cement, which I have indicated by 12. Thestrips of cork are each independently covered with a layer of freshcement, which I have indicated by 13. Having laid the cement evenly uponthe strips of cork, the operator in any suitable manner, as by means ofa scraper, produces longitudinal channels, which I have indicated by 14,in the cement upon the strips of cork. These channels do not in practiceextend quite from end to end of the strips of cork. I leave one or, ifpreferred, more cross-walls 15 of cement. These channels formed in thecement on the strips of cork comprise the dead-air spaces of thecompleted wall. The number of channels and the width of the channels andthe number of the cross-walls upon each strip of cork are whollyimmaterial so far as the principle of the invention is concerned. It isof course essential that the strips of cork be firmly secured in place,so as to avoid the possibility of their becoming separated in use. Afterinsuring the firm attachment of the strips of cork it is desirable thatthe amount of air-space be as large as possible, and,finally,

it is necessary that the air-space be divided into separate spaces inorder to prevent circulation of air therein and make of them, 1n

fact, dead-air spaces. Having prepared the wall with a layer of cementand prepared strips of cork with layers of cement having channels andcross-walls therein, the operator applies the strips of cork singly tothe cemented face of the wall by slapping each strip quickly in place,so that a suction is formed which causes the strips of cork to remainfirmly in place while the two layers of cement are fresh, it being ofcourse obvious that as soon as the cement sets it will itself hold thestrips of cork rigidly in place. An essential feature of my novelmethod, however, is that while the cement is fresh the strips of corkare held in place by suction.

Having thus described my invention, I claim-'- 1. A non-conducting wallcomprising a layer of brickwork, a layer of cementlaid thereon, an outerlayer of cork and a layer of cement applied to the cork and havingchannels formed therein, the two layers of cement being placed incontact whereby the layer of cork is retained in place.

2. A non-conducting wall comprising a layer of brickwork, a layer ofcement laid thereon,

an outer layer of cork in strips, and a layer of cement applied to thestrips of cork, the layer of cement upon the cork having channels andcross-walls formed therein, and the two layers of cement being placed incontact, whereby the strips of cork are retained in place and dead-airspaces are formed between the cork and the brick wall.

3. The method of making non-conducting walls which consists in applyinga layer of cement to a brick wall, applying a layer of cement to stripsof cork, forming longitudinal channels and cross-walls in the layer ofcement upon the strips of cork and then applying the strips of cork tothe face of the wall with the layers of cement in contact, so thatsuction is produced whereby the strips of cork are held in place anddead-air spaces are formed between the cork and the brickwork.

In testimony whereof I aflix my signature in presence of two Witnesses.

HORACE H. J UDSON. Witnesses:

A. M. WOOSTER, S. W. ATHERTON.

